Hour of Twilight Heroic Dungeon Guide (WoD 6.1)

Hour of Twilight is one of the three new heroic dungeons, introduced in
World of Warcraft Patch 4.3. The dungeon contains 3 boss encounters. Each of
the first two bosses drops one epic item of 378 item level, while the final
boss drops two items, as well as a Chaos Orb.

This is the final dungeon of the three. Here, your goal is to finally
deliver the Dragon Soul (which Nozdormu helped you retrieve from the past, in
Well of Eternity) to Wyrmrest Temple. Alongside Thrall, you will need to
overcome several obstacles, on your way to the temple.

The Hour of Twilight heroic dungeon is accessed from the Caverns of Time
instance hub, and it is also available through the Dungeon Finder. Like
End Time and Well of Eternity, this instance also has a linear layout. The
three bosses must be defeated in their designated order, and bosses cannot be
skipped.

This guide will cover all of the three boss encounters, as well as the
quests that are available in the dungeon.

All throughout the dungeon, you will have to speak to Thrall, telling him
that you wish to continue, and he will accompany you forward. It is important
that you do not forget to talk to Thrall, otherwise he will not follow you and you
will have to run back after him and waste a lot of time.

Thrall assists you during all three of the encounters in the dungeon, as
well as against all of the trash mobs.

The first quest is To Wyrmrest!. It is the last quest of the quest
chain that runs through the three Hour of Twilight heroic dungeons.

The second quest is The Twilight Prophet. In order to be eligible for
it, you need to have completed all the quests in End Time and Well of Eternity.

The quests reward you with item level 378 gear, just like the bosses
(see loot section above).
Failure to complete the quests will not affect your ability to progress
through the dungeons, or the Dragon Soul raid.

As soon as you enter the dungeon and speak with Thrall, you will be
ambushed by a few packs of ice elemental mobs, preceding the first boss,
Arcurion. They present little difficulty and are easily defeated.

The fight against Arcurion is a rather standard tank and spank fight.
In addition to the abilities that the boss casts, several ice elementals,
called Frozen Servitors, will hurl boulders (Icy Boulder) at your party.
A clear visual effect marks the spot where a boulder is set to land, giving
players a chance to move away when they are targeted (thus avoiding the
damage). These mobs are perched on the cliff edges surrounding the
encounter area, and they cannot be attacked in any way. Their numbers increase
as the fight goes on. Fortunately, Thrall spends the entire fight shooting lava
bursts at them, keeping their numbers in check.

At a certain point (sometimes twice) in the encounter, Arcurion will trap Thrall in a tomb
of ice, incapacitating him. Your party will have to destroy this tomb and free Thrall.

Arcurion's own abilities are of little consequence. He spams an
interruptible Hand of Frost ability, that damages the tank. Additionally,
at 30% health, he channels Torrent of Frost until he is killed. This deals
15,000 Frost damage per second to every member of your party, and acts as a
soft-enrage mechanics.

These trash packs deal a fairly high amount of damage to the tank, but
they are susceptible to the usual forms of crowd control. Additionally,
Thrall assists your party with a Rising Fire Totem. This totem places a
friendly void zone on the ground. Standing in it stacks a buff on players,
increasing their maximum health and damage done.

In addition to these trash mobs, you should also watch out for the
scattered, stealthed Twilight Assassins.

Asira Dawnslayer is an extremely easy boss encounter. The most notable
ability that she will use is her Choking Smoke Bomb. Regularly during the
fight, she will place a smoke screen around her. The smoke screen causes
line of sight for players, and also deals a small amount of damage each second
to anyone standing inside.
She should be moved out of the smoke screen immediately, each time it is
cast.

In addition to this, she also casts Mark of Silence on a random
caster in the group. This places a debuff on that player, and when the player
casts a spell under the effect of this debuff, Asira will throw a knife at
them. The knife collides with the first person in its path toward the marked
target, dealing a small amount of physical damage to them. If it collides with
the marked target, it will also silence them for 2.5 seconds. Therefore,
casters should always try to keep the tank or a melee DPS between them and the boss.

Once the boss is dead, your entire party can mount a group of Bronze Drakes.
These drakes will fly you near to Wyrmrest Temple.

Upon landing from your flight on the Bronze Drakes, you should once again
speak with Thrall and move forward. You will have to defeat several packs of
Faceless Ones and Corrupted Tentacles. These mobs present little difficulty
as well, although you need to make sure that the dark oozes that go down the
slope do not reach Thrall, as they deal quite a lot of damage to him.

After the third trash pack has been defeated, as you make your way down
towards Wyrmrest Temple, you will be greeted by Archbishop Benedictus. He
is initially friendly, and asks you to follow him inside the temple,
to safety. Once inside, however, after a short dialogue with Thrall, Benedictus
becomes hostile and the final encounter begins.

Benedictus has two phases, although nothing really changes between them
except for the names of the abilities, the color of their spell effect (from white
to purple) and their type of damage (from Holy damage to Shadow damage).

There are several things to watch out for during the encounter:

Several times during the encounter, Benedictus will summon a wave that
travels along a part of the platform (Wave of Virtue/Wave of Twilight).
The wall moves slowly and is
extremely damaging. Players must find a place where they are safe from it and
move there in order to avoid it.

6.1. Achievement: Eclipse

The Eclipse achievement is extremely simple. After the boss goes
into the second phase (after 65%), a number of "sparks" will spawn all around
the edges of the arena where you fight. Your group must kill 10 of these in
order to complete the achievement.

The sparks have extremely low health, and most classes will be able to
1 or 2 shot them. It is easier if ranged players handle them, although melee
can also perform the task.

Finishing Hour of Twilight marks the end of your journey through the dungeons
of Patch 4.3. You will have witnessed all the important lore events leading up to
the battle for Wyrmrest Temple that will bring about the demise of Deathwing.

Additionally, the item level 378 loot that all these dungeons are giving provides
a rapid way to reach entry-level raiding gear for the Dragon Soul.